Permutation lock



lJuly 6., 1926.

.2 'sheets-sheet 1 Filed [June 5, 1924 Thisl invention'relates to a permutationl lockadapted to lock two relatively 'rotatingl Patented July "rnnnurnfrioiv Loon. e

i Applicationeledune 3,1924.y Serial No. 717,541.

members in .either oftwo ormore positions relative to each other and in the'presentf instanceis shown as applied to a drum or cylinder forlocking the same in either of two Y positions wherein a varying degree oftension is applied to a-'cable, one end ofwhich issecured to the drum. While the inven-'i tion kin its'present embodiment is Vshown utilized for thepurpose above vdescribed itis to be'understood that they invention is'in lno sense limited tog-use-gin this connection but' `is adaptedtof beemployed generally" Wherever a lockingv means of l'this gen-V eral character is used-such as for safes',v Y strong boxes, etc., aswell as for locking au- Vtomobile parts, steering gears; and' machine elements generally against use by Yan unauthorized person.

VOne object'of provide a simple V:and inexpensive 'structure of the character described' whichv is Vefficient in-voperation and excellently adapted for use generally wherever-a lock of this f'zharacter` Y an annular shoulder 'andfthe opposite end -may be used. 1

V'Another objectof theinvention is to pro-- vide aV simpleV and .efficient lock `ofthe char` acter described for'flocking'a rotating .member vagainst rotation.- A further object of the invention is to VprovideV a locking means for securing a rotating member against-rotation which comprises one or more radially movable elements.

' Other objects and` advantages of the inf*- vention relate to certain improved details of con'structionand 'improved methods ofy opset forth inthev f for securing theparts together are normally accessible fori removal from the exterior of f the casing.y

eration as will be more-fully detailed descriptionjto follow. f Referring tothe drawings:

F ig. lis a side elevational View:myim'- 1 provedflock` structure' illustrated as applied `tothe instrument board of an :automobile.`

f Fig.' 2 is a front elevational view ofthe vstructure v'shownin Fig. 1,-apo'rtion "of the,"

front plate being brokenjaw'ay to Showthe position ofY certain' ofthe parts;

Fig. 3 is avertical sectional lview taken Y I v endthereoff'pivotally securedto a4 pin '21 aieng am line-'3 3' einig. 1. l

1-'1 Fig. 4. is a'vertical sectionalY View taken u e jto' theend of theeyh-nder by rivets or other "falongthe line la i. Y, of Fig. and

4the present invention isto taini of the parts.-

trated herewith 1 designates-the. instrument boardof an automobile t'o which the annular 'shoulder 2 of the casing'B, is secured'by .suit-V c .Y able securingdevices vsuch. v.as screws 4, then i heads of. the screws #i being concealed from view by theannular shoulder 5. of the cylin 1 der 6 Whereb'ytheremoval of. the screws'ra,

except by first removing the cylindei'f'',vv yis prevented.. Y n f 4within a cylindrical member 10 to which it flange 8 as shown in Fig. 4. Thus the'cyl-v The vcasingf is provided with an end plate f 7 which isY firmlysecured inrplace 4by any vsuitable means such asjbyx-attachment toV the fliange 8 ofa curved-securingplate Qlitting y inderf` is-rotatably mounted between the cas-4 ing 3 andthe cylindrical member. 10 in such a manner that it capable of rotating freely therebetween.

vThecylin'der 6 isprovidedatlone endwith thereof `terminates short Vofthe Lend platesv 7 asindicated by'thenumeral14..,Acurved i f Y so rior surface of the casing 3 andthe endpor 1 lill'er'plate; 16 is. inserted between the 'inte- 3. @By means ofthe structurel described the casing 3, cylindrical member 10,a nd `end plate kare firmly secured together in such a manner that none? of the' vfastening devices l are rrinlyse'cured; together byfrivets 'or other Y suitable securing devices 17 as shown in'Fig. 85 y -Y The Ycasing 3 iscprovided with alnarriow i .opening 18 formed adjacent to theendpor--ij tion thereof to which `the end plate'?A is` secured, and alip 19 extends.outwardlyfronr the casing along'th'e edges ofthe opening to prevent access tothe casing. Av rod20 leX-i -f` tends' through 'the opening 18and 'has one carried a lugrQQgwhich is in turn: secured z suitable .fastening devices 23. The rod is offset rearwardly of the end 14 of the 'cylinder 6 and in alignment with the opening 18, and, as will be seen upon references to Fig. 3 ofthe drawings, rotation ofthe cylinder r6. relative -to the casing mayv draw the rod into the position yshown in FighV or` what more thanflSOo ofits circumferential extent thereby providing space for the movementof thef lug 22V secured to the inner. face of the cylinder -6,l.and' providing shoulders 25 and 26 forV engagement by the lugV 22 to limit theV movement'of Vthe cylinder 6 and lug 22 carried thereby in each direction.V

rVViththis arran'gement'of the parts the` cylinder 6 may rotate through substantiallyV 1'80OV and the rod20 secured thereto may be drawn into the positionshownin Fig; 3

or turned Vso that it''issubstantially entirely VWithout the casing.

The annular shoulder 5 of thevcylinder l6 Y is provided upon its outerface with. aplu rality of radial grooves 26, in the present instance?y four in. number, although a-grcater or'lessnumber of grooves'may be' provided faswmay' be desired,sand ay bolt 27 isslidablymounted? in each. groove 26 for the purpose V@flocking the-cylinder. 6 in any one. of: a numberof desired. positions. The grooves 26 arepre'ferably4 of suiliicient depth so that. Vwhen the bolts 27 are placed therein .theird Vuppersurfaces are flush with the'outer face:

of the-annular 'shoulder 5. Each of the bolts 27 is provided with an: enlarged head 28. and` Vhas formed on: one side thereofa transverse slot 29 for akr purpose which will be. more fully" described hereinafter.

VOfdepressions 30 are' formed in the side of each bolt 27 oppositeV that in. which. the slot '2 9=.is formed, thedepressions 30i cooperating witlif-means now about to be described1 for holding the bolts against free sliding move-4 ment in the grooves. gv

vA .cover plate v32 is placedrfjover Vthe endof the cylinder 6i and secured tothe annularv shouldered portion-5 `by screwsor other suit'- able fastening means 33? which' are inserted from the rear face of the shoulder 5 sov that they maygnot be removed from thee-Xposed face of the cover plate.l llt is. mypiucpose, however, in. the'practical application of the invention. tomake the cover plate portion.

y so.

'integral with the shoulder 5 by castingor.

otherwise forming the parts so that. access A-nannot.b'exhad tothe interior of the: casingy byfpryi'ng off the cover plate. When the Vparts aref-'formed integral as above described the i groovesf26 may be.y formed,byboring.or-inv other suitable manner and the provision of A lplurality Ythe cylinder 6.

screw 35 is threaded into one face of each bolt near the end thereof sothat a portion th'ereof'proj'ects from the bolt to serve as a stop for preventing the bolt rfrom being entirely withdrawn from the groove. A recess Sis formed inthe cover plate opposite the -path of movement of each bolt, anda ball 37 and spring SSIpositionedin each recess wherebyithe springpressedball is forced by the, spring against the adjacent faceof the bolt 27 to engage one or another of the depressions 30 and thereby releasably locate the ball'successively in one or anothen'of the depressions asV the bolt is, moved inwardly or ,outwardly inf the groove 26. Each recessfhas the metal around the mouth spring SSand ball 37 are inserted to preventthe escape of the ball'in assembling the V structure. Eachbolt 27 may be provided upon-'the facecadjacent, to the cover plate I with-a plurality of numbered linesto assist the operator in. setting the bolts in accord! VanceV with a. code of numbers, or letters or other indicia may be vsubstituted. for vthe numbers. inthe present'caseffour numbers are used for each bolt, each number having a line correspondingtherewith, the numbers used-being 1,2, 3l and-l' as indicated atei). VThe cylindrical member l10 has formed therein, in the end' adjacent to the cover plate, a plural-ity of notchesy v41Y correspond-- ing to the number of bolts employed. The. bolts 2:7 slide in these; notches Lllas the boltsv are moved in'vthegroovesl 261 andwhen the several 'bolts' are moved finto position so that the transverse slots 29-of eachbolt register with the corresponding not-joh 41 thecyliir drical memberr l()v may bemturned relative to At Yall other times these parts are held against*rotationrelative to -each otherr bythey bolts.

When the'locking mechanism is in assembled position the only way in. which accessA may be'rhadf to the interior to" remove the parts or make repairs is by first'removing` the screw llfto whichaccessmayjbe'hadr Vthrough the opening; l2-in *theY casing'and a similar openingI 4:3? formedV in-fthe cylinder 6'. These openings can. only be brought into registry to kpermit of access to thel screw 1l when the bolts 27l are placed. in such` position as-to permit relativel rotation of the cylinder '6 and the cylindrical .member 10.

I' Thermae, one end Orthica is. @many secured to the'cylinden 6 as at 21, has its opposite endy secured te a. chain: or cable 44s,..

InV the operation ofthe structure Vabove 'described which i in thepresentilembodiment f isshoWn asfemployed :tor the purpose of locking an automobile part in onel or anotherjof tvvoN positions, vand more specii'icallyllfor loc-king an'f alarmrv .controlling mechanism@ such-as is shovvn and described -ilnimyvco-t pendingiapplication. i Serial No. 717,542v `filedf` 1 .,June'S, 1924, in eitherl of two different po-v sitions for preventing the sounding of the alarm or ycausing the samev to be 1 sounded t :pair of telescoping cylindrical members fit-1 't upon movement of one of thefoperating parts by an unauthorized person, thecableV Y44 may be released-byturning the cylinder 6 in a clockwise directionas seen in Fig.r3

tomovethe' point 21 a distanceof v180 ,de-

grees to the right oitI its position as shown in*v Fig. 3. The bolts 27 may be moved When -the partsare in that "position so that the 'Y Yslots 29 are no longerjin registry with the notches 41 whereupon the parts are locked j and cylinder'6 cannot be rotated relative to f the cylindrical member 10 until vthe bolts are moved to bring the slots 29 and notches 41 into registry. If itis then desired .to roj .tate the cylinder. 6 ina counter-clockwise Hdirection, as yseen in Fig. 3 tojbring the'parts into'the position shown in Fig, Slvvith thev cable 44under tension, the bolts 27- are seti in proper'position by dravvingthem Aout until `the slots'29 are in registry vvith the' sevl veral notches 41, the proper position of the l bolts being shown to one'familiar with the *combinationl .by ythe position of the numbered lines indicated at ,40.-

` The'slots 2 9 arepreferably located at different points upon Veach of the bolts so that the bolts Vare set. at 'diii'erenttnumbers to perf mit rotation-fof Vthe parts. After the bolts have been properly set the cylinder 6l may Vbe turned in Va counter-clockwise direction as seen in Fig. 3 until the parts are in they position shown in that figure. The'bolts may then -be Aal1 pressed inwardly or otherwise moved to such position that the several slots and notches are not in registry when the cyl-i Vindercannot berotated by -any person not familiar with' the combination since all ofY the bolts must be in thecorrectposition before rotation of thecylinder can be effected From the Vabove it will be seen thatV the present invention provides a simple and efficientcombination lock adapted vforuse for" a variety of purposes and in manydifferent arrangements' Vof devices for .locking bolts Vor moving parts `in one or anotherof diii'er-l Yent positions, and when thus locked the Y parts can only be moved when the bolts 27 have beenv Vproperly positioned by one familiar With the combination employed. The combination usedl `may Ybe changed at any .timerby substituting one or more' bolts lwith differentlypositioned slots for those vin use,

and even by changing the-arrangement of` n v Y 'L Y Y Within said casmgand concentrically poslthe bolts in use.

WhileI have shown-and described-myim'- V65v :proved lookin connectionl v vith1anyautomoc v l bile' structure iti isv to i be understoodthat the eluded in the vappended claims.

V'What I claim'Y-isz- I Y l' 'In aflOCk of the character described; a' Vi i vting Within ai, cylindrical casing vand KVrotatable relative to each Vother,rand radially dis? posed slidablefmembersv carried by one oi? j said .cylindrical members and' each'fmovable into any one ofa plurality of adjusted posi-f tions li:`or`holding said'cylindrical members against relative rotation While adapted to permit rotation of said cylindrical-membersi Y When each of ysaid slidable members occupies afcertain position. l

casing, a pair ofinterfitting cylindrical mem.-

V2. In va 'combination lock, a cylindrical bers fitting Within said'cylindricalcasing, l

*one offsaid members' being fixed 'and thel other of said members jbeing rotatable rela- .tive to said fixed member, a movable element,

means secured to saidl movable member and relative tovsaidcylindrical casing, and slid- "movabletherewith r4for moving said movable y i element, vand bolts each radially disposed 195i" able acrosstlie path fof movement of said4 movable member and movable into a p1u ralty of adjustedpositions'for lockingfsaid i' movable membergagainst movement relative to said fixed member Yorlfor releasing the;` same for .movement relative toV saidl fixedv member.V Y i l3. In Ya lock of described, a: Y

casing, a pair V'of relatively rotatable members, an element secured to one of said members `and adapted toberetra'cted'within yor 'n projected from'said casing upon rotation of saidmembersrelative to each other, and slidable bolts adjustable in Vaccordance `vvitha predetermined Y plan v f for i permitting relative rotation of said members' and movable thereupon to locklsaid elementin either its retracted or its projected position.A f

cylindrical casing, a cylindrical member positioned Withinsaid cylindrical casing andv fixed-With relation to said casing, aV cylindrical member fitting ybeit/ ceri fs'aid iirst named cylindrical member and .said casing androtatable relative lto said ix'ed member,7

' said casing, and means-*for locking said rotatable member relativeto said `i'iXed member.v 1725 cylindrical casing; la cylindrical member,

5. Ina lock of the character described, a

4. In a lock` of the'character described, a`

fixed-'With relation to said casing, vlocated* 4 VV l i f #135911;0216

- v"berf positioned? Within: said easing andi out locking said rotatablememb against rofcylnd'ialfmemb'er, amd aslidable member Signature- 

